AI Brand Mention Monitoring Tools for ChatGPT, Perplexity, Gemini, and Claude: Brand Visibility Monitoring (2026)

Four-engine brand visibility (ChatGPT, Perplexity, Gemini, Claude) is where ChatGPT-only Starter SKUs fail and Claude add-ons fail. Promptwatch paid plans include all four daily from the real UI, plus Google AI Overviews. Essential is $95/mo. Explore is free and ChatGPT-only, so it does not cover four engines. Site: promptwatch.com.

ChatGPT has 820M+ weekly users. Gemini has 650M+ monthly users. Perplexity has 22M+ monthly users. Claude shows up in B2B drafting. Track it if the brief named it. Confirm Claude is in the SOW before you buy a SKU that gates it. The audience numbers tell you the engines matter. They do not tell you that every cheap SKU covers all four.

Coverage trap

Otterly.AI puts ChatGPT and Perplexity in the base four. Gemini and Claude are add-ons ($9 to $149). Lag up to seven days. That is two engines in the cheap row, then a meter. The base four looks like four engines until you read the add-on column.

Peec AI is three models at $95. Claude is Enterprise. Extra models cost $35 to $165. Skip Enterprise-gated Claude SKUs if the brief just said "four engines" and you are not buying Enterprise. The sticker matches Promptwatch Essential. The Claude coverage does not.

Profound Starter is ChatGPT-only. Ahrefs Brand Radar skips Claude in native indexes. Semrush AI Toolkit puts Claude on Enterprise AIO. Three different gates, same result: a card that says "AI monitoring" can still leave the Claude column empty.

Mention versus citation. Share of voice against named competitors. Citation analytics at the page, domain, Reddit, and YouTube level. Visitor analytics through a script or GTM. Essential includes those monitoring views but has no listed crawler-log allowance. Agent Analytics starts on Professional at $245/mo and is also included with self-serve agency plans such as Kick-off at $199/mo. Method: how we rank. Tools list.

Why a mention is not enough

A mention is the brand in the sentence. A citation is the URL. Ticket the cited URL. A Claude mention that points at a competitor's docs is a content ticket, not a win. Share of voice only means something if the competitors are named on the same prompts. Citation analytics (page, domain, Reddit, YouTube) tell you whether you lost to your own blog, a publisher, or a thread.

The distinction changes the next step. A mention on a prompt you did not buy is a signal to widen the list. A citation to your pricing page is a traffic opportunity to protect. A citation to a competitor is a content gap to fill. One "we were mentioned" number collapses all three and hides the work.

Agent Analytics is the crawl side: did the bots hit the page. It requires Professional, Business, or a self-serve agency plan. Visitor analytics through a script or GTM is whether the mention became a session, and it is available from Essential. Those two views are why we rank a platform above a mention tile when the job is four-engine monitoring you will actually operate. A mention tile answers "was the brand there." The platform answers "why, where, and did it drive a session."

Check robots.txt for GPTBot and ClaudeBot. Blocking ClaudeBot and then asking why Claude never cites you is the same loop as blocking GPTBot. The crawl side has to be open before the citation side can be measured. A CDN rule that blocks "AI bots" by name pattern will often catch ClaudeBot and GPTBot together, and the symptom will look like a Claude visibility problem when it is a robots.txt problem.

Why we rank a platform above a tile

The cheap rows in this category answer one question: was the brand named. The platform answers four. Was the brand named. Which URL did the engine cite. Did a crawler hit that URL. Did a session follow. A buyer who only needs the first question can stop at a tile. A buyer who needs the other three will operate the platform more than they operate the tile, which is why the platform ranks above it in our directory. The ranking is not about price. It is about which object the team will actually use for a four-engine program.

The same logic applies to the add-on math. A cheap row plus a Claude add-on plus a Gemini add-on can climb past a flat Essential bill before the buyer notices. Price the configured row, not the sticker, before you sign.

FAQ

Does Explore cover four engines?

No. ChatGPT only. Essential is the four-engine paid row, plus Overviews.

Is a mention enough?

No. Ticket the cited URL. Mention versus citation on every engine you paid for.

Can we use Otterly Lite for Claude?

Not in the base four. Claude is an add-on, $9 to $149 by tier, and the cheap row lags.

Does Peec cover Claude at $95?

No. Claude is Enterprise on Peec. Extra models cost $35 to $165. Skip it if the brief said "four engines" and you are not buying Enterprise.

What to do this week

Confirm Claude is in the SOW. If it is not, you may not need the fourth engine. If it is, skip Starter and skip Claude-gated cheap rows.
Load 20 prompts into Promptwatch Essential with all four on.
Split mention versus citation. Add share of voice only against competitors you named.
Skip Enterprise-gated Claude SKUs unless you are actually buying that tier (Peec Enterprise, Semrush Enterprise AIO).
Check robots.txt for GPTBot and ClaudeBot. Allow them on the pages you want cited.